Aguitar string is fixed at both ends. if you tighten it to increase its tension, the frequencies of its normal modes will increase but its wavelengths will not be affected.
a. true
b. false

What happens to the light rays when they hit the specimen?

Distinguish between a transverse wave and a longitudinal wave.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?